Anhydrous Benzenesulfonic Acid

Lingxian Chemical

Specifications

HS Code	637005
Chemical Formula	C6H5SO3H
Molar Mass	158.17 g/mol
Appearance	White to off - white solid
Odor	Pungent
Density	1.326 g/cm³
Melting Point	44 - 46 °C
Boiling Point	Decomposes
Solubility In Water	Soluble
Acidity Pka	~ - 6.5
Flammability	Non - flammable
Corrosivity	Corrosive to metals and tissues
Chemical Formula	C6H5SO3H
Molar Mass	158.17 g/mol
Appearance	white crystalline solid
Odor	pungent
Density	1.32 g/cm³
Melting Point	43 - 44 °C
Boiling Point	140 °C (at 1.5 mmHg)
Solubility In Water	highly soluble
Acidity	strong acid
Corrosiveness	corrosive to metals and tissues
Name	Anhydrous Benzenesulfonic Acid
Chemical Formula	C6H5SO3H
Molar Mass	158.18 g/mol
Appearance	White to off - white solid
Odor	Pungent
Solubility In Water	Soluble
Melting Point	43 - 44 °C
Boiling Point	Decomposes
Density	1.326 g/cm³
Acidity Pka	~ -6.5
Flammability	Non - flammable
Stability	Stable under normal conditions
Chemical Formula	C6H5SO3H
Molar Mass	158.17 g/mol
Appearance	White to yellowish solid
Odor	Pungent
Solubility In Water	Soluble
Melting Point	65 - 69 °C
Boiling Point	Decomposes
Density	1.329 g/cm³
Acidity Pka	~ - 6.5
Stability	Stable under normal conditions, but reactive with strong oxidizing agents
Flammability	Combustible
Name	Anhydrous Benzenesulfonic Acid
Chemical Formula	C6H6O3S
Molar Mass	158.17 g/mol
Appearance	Colorless to white solid
Odor	Pungent
Solubility In Water	Soluble
Melting Point	43 - 44 °C
Boiling Point	Decomposes
Density	1.32 g/cm³
Acidity	Strong acid
Chemical Formula	C6H5SO3H
Molar Mass	158.17 g/mol
Appearance	white to off - white solid
Odor	pungent
Solubility In Water	soluble
Solubility In Organic Solvents	soluble in some organic solvents like ethanol
Melting Point	ca. 65 - 67 °C
Boiling Point	decomposes before boiling
Acidity	strong acid
Pka	ca. -6.5
Stability	stable under normal conditions, but reactive with bases, strong oxidizing agents
Chemical Formula	C6H5SO3H
Molar Mass	158.17 g/mol
Appearance	White to off - white crystalline solid
Odor	Pungent
Solubility In Water	Soluble
Melting Point	44 - 46 °C
Boiling Point	Decomposes
Density	1.32 g/cm³
Acidity	Strong acid
Pka	-6.5
Stability	Stable under normal conditions, but reacts with bases and strong oxidizing agents
Chemical Formula	C6H6O3S
Molar Mass	158.17 g/mol
Appearance	White to off - white solid
Odor	Pungent sulfur - containing odor
Solubility In Water	Soluble
Solubility In Organic Solvents	Soluble in some polar organic solvents
Acidity	Strong acid
Ph In Aqueous Solution	Low pH (acidic)
Melting Point	43 - 44 °C
Boiling Point	Decomposes before boiling
Stability	Stable under normal conditions but reactive with bases and strong oxidizing agents
Hazard	Corrosive, can cause skin and eye irritation
Chemical Formula	C6H5SO3H
Molar Mass	158.17 g/mol
Appearance	white to yellowish solid
Odor	pungent
Solubility In Water	soluble
Melting Point	65 - 67 °C
Boiling Point	decomposes
Acidity	strong acid
Density	1.329 g/cm³ (approximate)
Stability	stable under normal conditions but reactive with bases and some metals
Chemical Formula	C6H5SO3H
Molar Mass	158.17 g/mol
Appearance	white to yellowish solid
Odor	pungent
Solubility In Water	soluble
Melting Point	43 - 44 °C
Boiling Point	decomposes
Density	1.32 g/cm³
Acidity	strong acid
Ph Aqueous Solution	low pH value
Reactivity	reacts with bases, metals, etc.
Chemical Formula	C6H5SO3H
Molar Mass	158.17 g/mol
Appearance	White to off - white crystalline solid
Odor	Pungent
Density	1.32 g/cm³
Melting Point	44 - 47 °C
Boiling Point	Decomposes
Solubility In Water	Soluble
Acidity Pka	~ - 6.5
Flash Point	Non - flammable
Corrosivity	Corrosive to metals and tissues
Chemical Formula	C6H5SO3H
Molar Mass	158.17 g/mol
Appearance	white to yellowish solid
Odor	pungent
Solubility In Water	soluble
Solubility In Organic Solvents	soluble in some organic solvents like ethanol
Melting Point	around 44 - 46 °C
Boiling Point	decomposes before boiling
Acidity	strong acid
Corrosiveness	corrosive to metals and tissues
Stability	stable under normal conditions but can react with strong oxidizing agents
Chemical Formula	C6H5SO3H
Molar Mass	158.17 g/mol
Appearance	White to yellowish solid
Odor	Pungent
Solubility In Water	Soluble
Melting Point	43 - 44 °C
Boiling Point	Decomposes
Acidity Pka	~ -6.5
Density	1.32 g/cm³
Name	Anhydrous Benzenesulfonic Acid
Chemical Formula	C6H5SO3H
Molar Mass	158.17 g/mol
Appearance	White to off - white crystalline solid
Odor	Pungent
Solubility In Water	Soluble
Density	1.32 g/cm³
Melting Point	43 - 44 °C
Boiling Point	Decomposes
Acidity	Strong acid
Stability	Stable under normal conditions
Chemical Formula	C6H5SO3H
Molar Mass	158.17 g/mol
Appearance	white to off - white solid
Odor	pungent
Solubility In Water	soluble
Melting Point	ca. 65 - 69 °C
Boiling Point	decomposes
Acidity Pka	ca. -6.5
Density	1.32 g/cm³
Stability	stable under normal conditions but can react with bases and some metals
Name	Anhydrous Benzenesulfonic Acid
Chemical Formula	C6H6O3S
Molar Mass	158.175 g/mol
Appearance	White to yellowish crystalline solid
Odor	Pungent
Density	1.329 g/cm³
Melting Point	43 - 44 °C
Boiling Point	Decomposes
Solubility In Water	Soluble
Acidity Pka	~ -6.5
Stability	Stable under normal conditions, but may decompose on heating
Chemical Formula	C6H5SO3H
Molar Mass	158.17 g/mol
Appearance	White to off - white solid
Odor	Pungent
Solubility In Water	Soluble
Solubility In Organic Solvents	Soluble in polar organic solvents
Acidity	Strong acid
Melting Point	ca. 65 - 69 °C
Boiling Point	Decomposes before boiling
Density	1.326 g/cm³ (approx.)
Stability	Stable under normal conditions but reactive with bases and strong oxidizing agents
Name	Anhydrous Benzenesulfonic Acid
Chemical Formula	C6H6O3S
Molar Mass	158.17 g/mol
Appearance	White to off - white crystalline solid
Odor	Characteristic pungent odor
Solubility In Water	Soluble
Solubility In Organic Solvents	Soluble in some organic solvents like ethanol
Melting Point	Around 43 - 44 °C
Boiling Point	Decomposes before boiling
Acidity	Strong acid, dissociates in water to release H+ ions
Stability	Stable under normal conditions, but can react with strong oxidizing agents

Packing & Storage

Packing	500 - gram bottles of anhydrous benzenesulfonic acid, well - sealed for storage.
Storage	Anhydrous benzenesulfonic acid should be stored in a cool, dry, well - ventilated area, away from heat sources and open flames. Keep it in tightly - sealed containers to prevent moisture absorption, as it can react with water. Store it separately from incompatible substances like strong bases, reducing agents, and reactive metals to avoid potential chemical reactions.
Shipping	Anhydrous Benzenesulfonic Acid is shipped in sealed, corrosion - resistant containers. These are carefully packed to prevent leakage during transit. Transport follows strict hazardous chemical regulations to ensure safety.

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General Information

Frequently Asked Questions

What are the main uses of Anhydrous Benzenesulfonic Acid?

Anhydrous benzenesulfonic acid has a wide range of uses. In the field of organic synthesis, it is often a key reagent. It can be used as a catalyst to increase the rate of reaction and change the process of reaction in many chemical reactions.
For example, in esterification reactions, anhydrous benzenesulfonic acid can promote the combination of organic acids and alcohols to form ester compounds. In this process, it provides protons to activate the reactant molecules and reduce the activation energy of the reaction, making the reaction more likely to occur. And compared with other catalysts, its catalytic activity is quite high and its selectivity is also good, which can make the reaction proceed efficiently in the desired direction.
In the sulfonation reaction, anhydrous benzenesulfonic acid is a commonly used sulfonating agent. It can introduce sulfonic acid groups into organic compound molecules to prepare various sulfonic acid derivatives. These derivatives have important uses in dyes, medicine, surfactants and other industries. For example, when making dyes, the introduction of sulfonic acid groups can increase the water solubility and affinity of dyes and improve their dyeing properties.
In the alkylation reaction, anhydrous benzenesulfonic acid also shows its effectiveness. It can catalyze the alkylation reaction of olefins or halogenated hydrocarbons with aromatics to form alkyl aromatics with specific structures. Such products are used in chemical production as additives for high-octane gasoline or as raw materials for the synthesis of other fine chemicals.
In the petrochemical field, anhydrous benzenesulfonic acid can be used for the refining of oils. It can remove impurities and harmful substances in oil products, improve the quality and performance of oil products, ensure smooth combustion of oil in engines and other equipment, and reduce environmental pollution.
Furthermore, in some special organic synthesis reactions, anhydrous benzenesulfonic acid can participate in the reaction as a reactant to construct novel organic compound structures due to its unique acidic and chemical properties, providing a new path and possibility for the development of organic synthesis chemistry.

What are the Physical Properties of Anhydrous Benzenesulfonic Acids

Anhydrous benzenesulfonic acid is one of the organic compounds. It has unique physical properties, which are described in detail by you.
Looking at its properties, under normal temperature and pressure, anhydrous benzenesulfonic acid is in the state of white to slightly yellow crystalline powder, and its appearance is delicate and characteristic.
When it comes to the melting point, it is about 104-106 ° C. When the temperature reaches this point, it gradually melts from a solid state to a liquid state, which is the key node of the physical state transformation, reflecting its characteristics of thermal change.
As for solubility, this substance is easily soluble in water, and can be quickly dispersed and dissolved in water to form a uniform solution. And because of its sulfonic acid group, hydrogen ions can be ionized in water, causing its aqueous solution to be acidic and acid-like.
And looking at its density, the relative density (water = 1) is about 1.32. This value shows that compared with water, the difference in mass distribution reflects the relationship between its space occupation and mass.
Furthermore, anhydrous benzenesulfonic acid has strong water absorption. Exposed to air, it can quickly absorb water vapor and deliquescence is significant. This characteristic makes it necessary to pay special attention to the humidity of the environment when storing and using it, so as to prevent it from affecting the quality and performance due to water absorption.
In addition, its smell is weak, but it is still irritating. If the human body comes into contact with it, especially the respiratory tract and skin, it may cause discomfort. Therefore, when operating, be cautious and take protective measures.
All these physical properties are the key to understanding and using anhydrous benzenesulfonic acid. In many fields such as chemical industry and scientific research, they are of important guiding significance, so that we can properly dispose of and rationally utilize this substance.

Is the Chemical Properties of Anhydrous Benzenesulfonic Acid Stable?

Anhydrous benzenesulfonic acid is particularly active, but it is not stable.
It has strong acid properties and is often used as an efficient catalyst in many chemical reactions. In contact with water, it is very soluble, and when dissolved, it releases heat very sharply. The characteristic of this dissolving exothermic may cause the temperature of the system to rise sharply. If the temperature control is not enough, it may be dangerous.
And its chemical activity is high, easy to react with a variety of organic and inorganic substances. If it encounters alcohols, it can promote the esterification reaction; if it encounters bases, it will cause a neutralization reaction.
Because of its active nature, it must be paid more attention when storing and using. It must be placed in a dry and well-ventilated place to avoid contact with water, alkalis and reducing substances. If not stored properly, it is easy to deteriorate and may cause safety risks.
Therefore, anhydrous benzenesulfonic acid is chemically active and non-stable. Strict procedures must be followed for use and storage to prevent accidents.

What is the Production Method of Anhydrous Benzenesulfonic Acid?

The method of making anhydrous benzene sulfonic acid is often co-heated with benzene and fuming sulfuric acid. The details are as follows:
First take an appropriate amount of benzene and place it in a heat-resistant reactor. Benzene, a hydrocarbon with an aromatic ring, is the starting material for the reaction. The second time is slowly added to the fuming sulfuric acid, which contains an excess of sulfur trioxide and has a strong activity. Add time slowly and stir to make sure that the two are mixed evenly and prevent overreaction.
When the two meet, the hydrogen on the benzene ring reacts with the sulfonic acid group (SOH) in the fuming sulfuric acid. This process is electrophilic substitution, and the sulfur trioxide in the fuming sulfuric acid acts as an electrophilic reagent to attack the higher density of the electron cloud of the benzene ring. The sulfonic acid group replaces the hydrogen atom on
When reacting, the temperature should be controlled within a suitable range. If the temperature is too low, the reaction will be slow; if the temperature is too high, side reactions may occur, resulting in impure products. Generally speaking, the temperature is often maintained between tens of degrees Celsius and more than 100 degrees Celsius, depending on the specific situation.
After the reaction is completed, if you want to obtain anhydrous benzenesulfonic acid, you need to remove excess sulfuric acid and water. The method of vacuum distillation can be used to reduce the pressure and reduce its boiling point, so that the sulfuric acid and water can escape first, leaving the anhydrous benzenesulfonic acid with a high boiling point in the kettle. Or use other suitable separation methods, such as extraction, crystallization, etc., depending on the actual conditions and needs, through these steps, anhydrous benzenesulfonic acid can be obtained.

Anhydrous Benzenesulfonic Acid in Storage and Transportation

Anhydrous benzenesulfonic acid is lively, and many matters need to be paid attention to during storage and transportation.
Let's talk about storage first. First, it must be placed in a cool and dry place. Because of its water absorption, if it is in a humid place, it is easy to absorb moisture and deteriorate, resulting in its purity being reduced, which will affect the effect of future use. Second, it should be stored in a well-ventilated place. Anhydrous benzenesulfonic acid or volatilizes irritating gases. Good ventilation can disperse these gases, prevent their accumulation, avoid safety hazards, and protect people from their harm. Third, be sure to keep away from fire and heat sources. This substance is flammable, and may cause combustion or even explosion in case of open flames and hot topics, endangering surrounding safety. Fourth, it should be stored separately from oxidants and alkalis. Because anhydrous benzenesulfonic acid can oxidize with oxidants, and neutralize with alkalis, it will damage its quality and may also cause danger.
Let's talk about transportation. First, the transportation container needs to be strictly selected. Containers with good corrosion resistance and sealing should be selected to prevent the leakage of anhydrous benzenesulfonic acid. Because of its corrosive nature, once it leaks, it will not only damage the environment, but also corrode the surrounding objects, injuring other goods and people. Secondly, the transportation process should be stable. Avoid violent vibration and impact to prevent material leakage due to damage to the container. Furthermore, the transportation personnel should have professional knowledge. Knowing the characteristics of anhydrous benzene sulfonic acid, in case of emergencies, we can quickly take appropriate measures to dispose of it according to its nature to ensure transportation safety.